A full O2 cylinder stores approximately 660 L at about which pressure?

A full O2 cylinder stores approximately 660 L at about which pressure?

• A. 1800 psi
• B. 2000 psi
• C. 2200 psi
• D. 2600 psi

Answer: (C)

The main idea is that the amount of gas inside a compressed oxygen cylinder is tied to the pressure in the cylinder. The figure of about 660 liters is the volume of oxygen at standard temperature and pressure that the cylinder can deliver when it is full. For a standard anesthesia O2 cylinder, the full-fill pressure is around 2,200 psi, which roughly corresponds to that 660 L of gas. So 2,200 psi is the best match to the stated 660 L capacity. If the pressure were lower, you’d have less gas available; if it were higher, you’d have more than the typical 660 L. Temperature can slightly affect the exact pressure reading, but 2,200 psi is the common full-pressure reference for this cylinder size.

The main idea is that the amount of gas inside a compressed oxygen cylinder is tied to the pressure in the cylinder. The figure of about 660 liters is the volume of oxygen at standard temperature and pressure that the cylinder can deliver when it is full. For a standard anesthesia O2 cylinder, the full-fill pressure is around 2,200 psi, which roughly corresponds to that 660 L of gas. So 2,200 psi is the best match to the stated 660 L capacity. If the pressure were lower, you’d have less gas available; if it were higher, you’d have more than the typical 660 L. Temperature can slightly affect the exact pressure reading, but 2,200 psi is the common full-pressure reference for this cylinder size.